SpringCloud(Hoxton)--配置Gateway网关、动态路由

cloud-gateway-gateway9527网关微服务

依赖：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>cloud2020</artifactId>
        <groupId>pers.zhang.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-gateway-gateway9527</artifactId>

    <dependencies>
        <!--gateway-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <!--eureka-client-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
        <dependency>
            <groupId>pers.zhang.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!--一般基础配置类-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

配置：application.yml

server:
  port: 9527
spring:
  application:
    name: cloud-gateway

  cloud:
    gateway:
      routes:
        - id: payment_routh #payment_route #路由的ID，没有固定规则但要求唯一，建议配合服务名
          uri: http://localhost:8001 #匹配后提供服务的路由地址
          predicates:
            - Path=/payment/get/**  #断言，路径相匹配的进行路由

        - id: payment_routh2 #payment_route
          uri: http://localhost:8001
          predicates:
            - Path=/payment/lb/**

eureka:
  instance:
    hostname: cloud-gateway-service
  client: #服务提供者provider注册进eureka服务列表内
    service-url:
      register-with-eureka: true
      fetch-registry: true
      defaultZone: http://eureka7001.com:7001/eureka

路由的配置对应被调用的8001端口的接口：


启动类：

@SpringBootApplication
@EnableEurekaClient
public class GateWayMain9527 {
    public static void main(String[] args) {
        SpringApplication.run(GateWayMain9527.class, args);
    }
}

测试：启动eureka，8001微服务和9527网关：

访问：localhost:9527/payment/get/35

访问：localhost:9527/payment/lb

使用编码方式配置路由

代码注入RouteLocator的Bean，官网案例如下：

路由配置类：

@Configuration
public class GateWayConfig {

    @Bean
    public RouteLocator customRouteLocator(RouteLocatorBuilder routeLocatorBuilder) {
        RouteLocatorBuilder.Builder routes = routeLocatorBuilder.routes();
        routes.route("path_route_baidu",
                r -> r.path("/guonei")
                        .uri("http://news.baidu.com/guonei")).build();
        return routes.build();
    }
}

测试：访问localhost:9527/guonei，成功跳转到百度国内新闻

配置动态路由

默认情况下Gateway会根据注册中心注册的服务列表，以注册中心上微服务名为路径创建动态路由进行转发，从而实现动态路由的功能。

修改配置：

server:
  port: 9527
spring:
  application:
    name: cloud-gateway

  cloud:
    gateway:
      discovery:
        locator:
          enabled: true #开启从注册中心动态创建路由的功能，利用微服务名进行路由
      routes:
        - id: payment_routh #payment_route #路由的ID，没有固定规则但要求唯一，建议配合服务名
          #uri: http://localhost:8001 #匹配后提供服务的路由地址
          uri: lb://cloud-payment-service #匹配后提供服务的路由地址
          predicates:
            - Path=/payment/get/**  #断言，路径相匹配的进行路由

        - id: payment_routh2 #payment_route
          #uri: http://localhost:8001
          uri: lb://cloud-payment-service #匹配后提供服务的路由地址
          predicates:
            - Path=/payment/lb/**

eureka:
  instance:
    hostname: cloud-gateway-service
  client: #服务提供者provider注册进eureka服务列表内
    service-url:
      register-with-eureka: true
      fetch-registry: true
      defaultZone: http://eureka7001.com:7001/eureka

启动eureka，8001和8002两个服务以及9527网关：

访问：localhost:9527/payment/lb，调用的服务在8001，8002两个端口切换